PLATE LXIV. 



Fig. i. Orthasterias leptolena Verrill. Type. Actinal side; about V% natural 



size. Canadian Geol. Survey. 

 Fig. \a. The same specimen. Dorsal side ; 1-i natural size. 

 Fig. 2. The same. A young specimen. Actinal side; 9/10 natural size. 

 Fig. 20. The same specimen. Dorsal side ; 9/10 natural size. One ray is lost. 



